Photo

Kenyan security forces walk back from the Westgate Mall as black smoke billows above, following large explosions and heavy gunfire, in Nairobi, Kenya Monday, Sept. 23, 2013. Four large blasts rocked Kenya's Westgate Mall on Monday, sending large plumes of smoke over an upscale suburb as Kenyan military forces sought to rescue an unknown number of hostages held by al-Qaida-linked militants. (AP Photo/Jonathan Kalan)
/ AP